Sensitive teeth is a common problem in Australia. Hypersensitivity or increased sensitivity is caused when the dentine is exposed. The dentine is the inner layer of a tooth that is normally covered by enamel. Consequently, hypersensitivity can be caused by a number of reasons:
– Abrasion lesions due to excessive tooth brushing: This causes the exposure of the roots. Since the roots are not covered by enamel, the dentine will be exposed, thus causing sensitivity to hot and cold.
– Fractured tooth: Sometimes a tooth can be fractured due to excessive occlusal force, tooth wear or because of expansion of filling materials. This fracture line causes exposure of dentine and will result in hypersensitivity.
– Decayed tooth: When the enamel layer of the tooth is decayed, the dentine will be exposed, thus causing sensitive teeth.
– Cracked tooth syndrome: A crack in the tooth will provide a passage between the external environment and the nerve of the tooth. This will result in sensitivity to hot/cold, water and mechanical forces (such as when one is chewing)
It is best to consult your dentist when you start feeling hypersensitivity reactions. Treatments might range from using anti-sensitive toothpaste and oral hygiene instruction to covering the exposed dentine with dental restorative materials.
For more information, visit: Home – Hornsby Dental
or give us a call on (02) 8090 1100 for more information and to speak with one of the Hornsby Dentist | Hornsby Dental team members.
Common causes of sensitive teeth
- Worn enamel from hard brushing, acidic food and drinks, or grinding
- Gum recession exposing the root surface
- Tooth decay or a leaking old filling
- A cracked tooth
- Recent teeth whitening (usually temporary)
What helps
- Switch to a soft toothbrush and brush gently.
- Use a toothpaste made for sensitive teeth, and spread a little over the sensitive area before bed.
- Rinse with water after acidic drinks, and wait about 30 minutes before brushing.
- If you grind your teeth, ask about a protective splint.
When to see a dentist
See us if sensitivity lasts more than a couple of weeks, keeps you awake, is getting worse or is limited to one tooth. These can be signs of decay, a cracked tooth or gum problems that need treatment. Your dentist can find the cause and may apply a desensitising treatment, seal exposed root surfaces or replace a worn filling.
Book a check-up and teeth cleaning in Hornsby at Hornsby Dental, or call (02) 8090 1100.